US3945594A - Cable tension relievers - Google Patents

Cable tension relievers Download PDF

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Publication number
US3945594A
US3945594A US05/400,588 US40058873A US3945594A US 3945594 A US3945594 A US 3945594A US 40058873 A US40058873 A US 40058873A US 3945594 A US3945594 A US 3945594A
Authority
US
United States
Prior art keywords
cable
wings
clamp
opening
adjacent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/400,588
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English (en)
Inventor
David A. Burt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ITW Ltd
Original Assignee
ITW Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ITW Ltd filed Critical ITW Ltd
Application granted granted Critical
Publication of US3945594A publication Critical patent/US3945594A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G11/00—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes
    • F16G11/02—Means for fastening cables or ropes to one another or to other objects; Caps or sleeves for fixing on cables or ropes with parts deformable to grip the cable or cables; Fastening means which engage a sleeve or the like fixed on the cable
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
    • F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
    • F16L3/12—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing comprising a member substantially surrounding the pipe, cable or protective tubing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
    • H02G3/0616—Joints for connecting tubing to casing
    • H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
    • H02G3/0641—Joints for connecting tubing to casing with means for preventing disengagement of conductors with means distorted around the conductors

Definitions

  • This invention concerns cable clamps.
  • a cable clamp is a device which can be anchored adjacent to a panel and can clamp a cable passing through an aperture in the panel.
  • the panel is the exterior wall of an electrical appliance such as a cooker, refrigerator or television, and the clamp is anchored to strong frame members concealed by the panel.
  • the cable can be subjected to tension or pushing, either gradual or sudden, which would be sufficient to wrench the cable from electrical terminals to which it connects inside the appliance.
  • a cable clamp fastens the cable to the frame member, and there is a length of slack cable between the clamp and the terminals whereby any tension exerted on the cable outside the appliance is carried by the clamp and the frame member and is not transmitted to the terminals.
  • a cable clamp is a one-piece plastics moulding and comprises first and second pairs of flexible gripping wings, the two wings of each pair being opened from one another by the action of pushing a cable along their gripping edges to be gripped between them; during their opening actions the first pair of wings deflecting towards one end of the clamp, and the second pair towards the opposite end.
  • FIG. 1 is a plan of the clamp in its "as moulded" condition, two portions of a cable lying adjacent to the clamp being shown in the position for application to the clamp;
  • FIG. 2 is an end view of the clamp, taken in the direction indicated by the arrow y seen in FIG. 1, but the clamp having been applied to a frame member ready for anchoring;
  • FIG. 3 is a diagrammatic view of an alternative arrangement for certain parts of the clamp.
  • the clamp is first anchored to a frame member 10 such as a bracket or beam within the appliance, by passing a shank 12 which projects from an undersurface of the clamp, as viewed in FIG. 2, through an aperture 14 in the frame member 10.
  • a frame member 10 such as a bracket or beam within the appliance
  • the shank has three legs defining between them a downwardly converging bore.
  • a pin 16 lies coaxially with the upper end of the bore and connects to the legs by thin webs which are sheared by driving the pin 16 axially downwards to force the pin to lie within the bore and hold the legs divergent.
  • This form of anchoring is known, and could be replaced by mechanically equivalent anchorings which might be more appropriate to differen applications.
  • the cable is then laid over the clamp, in the position indicated diagrammatically in FIG. 1 by the two spaced portions X which are portions lying just outside the clamp.
  • the cable is then forced down into the clamp. This involves forcing the cable between the free, gripping edges of a first pair of wings 18 near the one end of the clamp, and those of a second pair of wings 20 lying near to the opposite end of the clamp.
  • Each of the wings is integrally formed to project from a thick wall defining the general hollow body of the clamp. Each pair converges obliquely towards its adjacent end.
  • FIG. 1 shows the relaxed condition of the wings 18 and 20. When the cable is forced down between the gripping edges the wings obviously lie opened out and much further apart so that they grip the cable firmly.
  • a lid 24 can then be hinged through an interconnecting plastic hinge 26 to overlie the cable and the wings.
  • a slot 28 in the lid fastens over a hook 30 formed on a cantilever projection on the far side of the body of the clamp.
  • tubular portions Surrounding the portions of the cable adjacent to the wings are tubular portions, shown as 32 and 34.
  • the tube 32 passes through an aperture in the panel of the appliance, giving a neat seal and preventing the cable or a tool from being pushed between the panel and the clamp.
  • the tube 34 is principally for styling, to conceal the wings 18.
  • the lid 24 has substantially the same outline as the body of the clamp.
  • a force in the direction of the arrow Y could be caused by pulling of the the upper part of the cable seen in FIG. 1, away from the clamp, or by a pushing on the lower part of the cable as viewed, towards the cable clamp.
  • cable clamp described has the advantage that it can be moulded integrally in a two-plate mould, and can be of plastics material. Nylon 66 is suitable.
  • FIG. 3 shows merely portions of such a clamp.
  • the two pairs of wing ends 36 and 38 hold a cable of fairly small diameter, two portions of which are shown as 37.
  • the pairs of wing ends 40 and 42 have much greater spaces between them and grip a larger cable shown as 39.
  • the clamp can be mounted on the frame member to lie in either of two perpendicular directions to accomodate the appropriate cable. This arrangement halves the number of clamps required to be kept in stock to clamp a range of cable diameters.
  • the clamping pressure is in the direction perpendicular to that in which the lid is applied to the body, making the strength of the grip predictable rather than depending on the throughness of whoever assembles the appliance.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Insertion, Bundling And Securing Of Wires For Electric Apparatuses (AREA)
  • Clamps And Clips (AREA)
  • Supports For Pipes And Cables (AREA)
US05/400,588 1972-09-27 1973-10-01 Cable tension relievers Expired - Lifetime US3945594A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4469872A GB1388326A (en) 1972-09-27 1972-09-27 Cable clamps
UK44698/72 1972-09-27

Publications (1)

Publication Number Publication Date
US3945594A true US3945594A (en) 1976-03-23

Family

ID=10434381

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/400,588 Expired - Lifetime US3945594A (en) 1972-09-27 1973-10-01 Cable tension relievers

Country Status (5)

Country Link
US (1) US3945594A (de)
JP (1) JPS5640520B2 (de)
CA (1) CA993069A (de)
FR (1) FR2200655B3 (de)
GB (1) GB1388326A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037810A (en) * 1976-01-12 1977-07-26 Indian Head Inc. Pipe bracket and clamp
US4125238A (en) * 1976-04-09 1978-11-14 Nifco, Inc. Cord holder
US5106326A (en) * 1990-03-20 1992-04-21 Yazaki Corporation Connector housing and hinge-connected lid therefor
US20040097120A1 (en) * 2002-11-14 2004-05-20 Limber Jamie A. Safety cage for electrical plugs
WO2009099393A1 (en) * 2008-02-05 2009-08-13 Richard Patrick Swyny Tension inhibitor for gas hoses and electrical cables

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59154424A (ja) * 1983-02-22 1984-09-03 Asahi Glass Co Ltd 液晶表示装置
JPS63325U (de) * 1986-06-17 1988-01-05
EP0474910B2 (de) * 1990-09-14 1995-06-28 Brugg Drahtseil AG Kreuzklemme sowie Drahtseilnetz mit Kreuzklemmen
US5161759A (en) * 1991-06-17 1992-11-10 Emhart, Inc. Wire bundle retainer
FR2906112B1 (fr) * 2006-09-21 2009-03-27 Ykk France Sarl Boitier d'extremite pour une sangle

Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1300994A (en) * 1917-07-31 1919-04-15 Bolton C Moise Wire-rope clamp.
US1817776A (en) * 1928-10-23 1931-08-04 Harry E Sipe Coupling
US2333869A (en) * 1942-12-21 1943-11-09 Broderick & Bascom Rope Compan Rope clamp
GB815688A (en) * 1956-06-01 1959-07-01 United Carr Fastener Corp Improvements in or relating to retaining bushings and to assemblies including such bushings
US3030601A (en) * 1958-10-30 1962-04-17 Donald R Krebs Electric cord connector
US3197556A (en) * 1962-01-17 1965-07-27 Simon Johann Hans Insulating sleeve for guiding cables through a wall opening
GB1022820A (en) * 1963-11-12 1966-03-16 Albert Victor Raymond Improvements in and relating to fasteners for attaching a cable or cables to an apertured support
US3286963A (en) * 1964-09-11 1966-11-22 Bergman Ralph Roger Releasable connector
US3288407A (en) * 1965-02-08 1966-11-29 United Carr Inc Grommets
US3296669A (en) * 1965-04-13 1967-01-10 Plykon Corp Lace or line locking device
US3316523A (en) * 1964-11-20 1967-04-25 George J Trangmar Electrical cord accessory
US3351974A (en) * 1965-12-30 1967-11-14 United Carr Inc Self-securing grommet
DE1575253A1 (de) * 1966-12-12 1970-01-08 Raymond A Fa Klammer zur Befestigung von zylindrisch oder annaehernd zylindrisch ausgebildeten Teilen,insbesondere von Leisten,Kabeln und Rohren
US3516111A (en) * 1967-12-22 1970-06-23 Heyman Mfg Co Universal bushing
US3548079A (en) * 1969-05-16 1970-12-15 Raychem Corp Bulkhead feedthrough
GB1226569A (de) * 1967-04-28 1971-03-31
US3683319A (en) * 1970-10-27 1972-08-08 Amp Inc Notched plate clasp apparatus
US3689014A (en) * 1971-06-18 1972-09-05 Richard R Fink Camming strain relief bushing
US3784961A (en) * 1972-04-24 1974-01-08 Hubbell Inc Harvey Cable clamp

Patent Citations (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1300994A (en) * 1917-07-31 1919-04-15 Bolton C Moise Wire-rope clamp.
US1817776A (en) * 1928-10-23 1931-08-04 Harry E Sipe Coupling
US2333869A (en) * 1942-12-21 1943-11-09 Broderick & Bascom Rope Compan Rope clamp
GB815688A (en) * 1956-06-01 1959-07-01 United Carr Fastener Corp Improvements in or relating to retaining bushings and to assemblies including such bushings
US3030601A (en) * 1958-10-30 1962-04-17 Donald R Krebs Electric cord connector
US3197556A (en) * 1962-01-17 1965-07-27 Simon Johann Hans Insulating sleeve for guiding cables through a wall opening
GB1022820A (en) * 1963-11-12 1966-03-16 Albert Victor Raymond Improvements in and relating to fasteners for attaching a cable or cables to an apertured support
US3286963A (en) * 1964-09-11 1966-11-22 Bergman Ralph Roger Releasable connector
US3316523A (en) * 1964-11-20 1967-04-25 George J Trangmar Electrical cord accessory
US3288407A (en) * 1965-02-08 1966-11-29 United Carr Inc Grommets
US3296669A (en) * 1965-04-13 1967-01-10 Plykon Corp Lace or line locking device
US3351974A (en) * 1965-12-30 1967-11-14 United Carr Inc Self-securing grommet
DE1575253A1 (de) * 1966-12-12 1970-01-08 Raymond A Fa Klammer zur Befestigung von zylindrisch oder annaehernd zylindrisch ausgebildeten Teilen,insbesondere von Leisten,Kabeln und Rohren
GB1226569A (de) * 1967-04-28 1971-03-31
US3516111A (en) * 1967-12-22 1970-06-23 Heyman Mfg Co Universal bushing
US3548079A (en) * 1969-05-16 1970-12-15 Raychem Corp Bulkhead feedthrough
US3683319A (en) * 1970-10-27 1972-08-08 Amp Inc Notched plate clasp apparatus
US3689014A (en) * 1971-06-18 1972-09-05 Richard R Fink Camming strain relief bushing
US3784961A (en) * 1972-04-24 1974-01-08 Hubbell Inc Harvey Cable clamp

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037810A (en) * 1976-01-12 1977-07-26 Indian Head Inc. Pipe bracket and clamp
US4125238A (en) * 1976-04-09 1978-11-14 Nifco, Inc. Cord holder
US5106326A (en) * 1990-03-20 1992-04-21 Yazaki Corporation Connector housing and hinge-connected lid therefor
US20040097120A1 (en) * 2002-11-14 2004-05-20 Limber Jamie A. Safety cage for electrical plugs
WO2009099393A1 (en) * 2008-02-05 2009-08-13 Richard Patrick Swyny Tension inhibitor for gas hoses and electrical cables

Also Published As

Publication number Publication date
FR2200655A1 (de) 1974-04-19
JPS5640520B2 (de) 1981-09-21
CA993069A (en) 1976-07-13
JPS4986893A (de) 1974-08-20
FR2200655B3 (de) 1976-08-20
GB1388326A (en) 1975-03-26

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